Retraction note : Stem Cell Res Ther 7, 180 (2016)

https://doi.org/10.1186/s13287-016-0438-5

The authors have retracted this article because there appear to be irregularities in panels b, c, e and f in Fig. 3. The authors are repeating their experiments and will submit a new manuscript for peer review. All authors agree with this retraction.